
Figure 9
Comparison of four theoretical models, using the constant Q cut (width of 0.067 Å^{1}) for Q = 4.6 Å^{1} from Fig. 8, with experimental data for aluminium at 10 K obtained on the MARI spectrometer, ISIS (grey line). (a) The original LJ 126 model, (b) the LJ 126 model fitted from MARI experimental data, (c) the original MeiDavenport model and (d) the MeiDavenport model fitted from MARI experimental data. The horizontal axes are energy transfer and vibrational frequency (meV and cm^{1}, respectively) and the vertical axis is S'_{coh}(Q, ). 